Add release target and script

So that we can push releases to Github

Makefile

@@ -26,26 +26,36 @@ cd $(1) && go test -v -parallel 128
 endef
 
 define cross_build
-mkdir -p bin/$(1)/$(2);
-GOOS=$(1) GOARCH=$(2) CGO_ENABLED=0 go build -o bin/$(1)/$(2)/$(PKG) -a -tags "static_build $(PKG)" -installsuffix $(PKG) ${GO_LDFLAGS_STATIC};
+mkdir -p ./bin;
+GOOS=$(1) GOARCH=$(2) CGO_ENABLED=0 go build -o bin/$(PKG)_$(1)_$(2) -a -tags "static_build $(PKG)" -installsuffix $(PKG) ${GO_LDFLAGS_STATIC};
 endef
 
 .PHONY: install-deps
 install-deps: ## Install deps with Glide
-	@echo "Installing deps..."
-	glide install
+	@echo "==> Installing deps..."
+	@glide install
 
 .PHONY: fmt
 fmt: ## Run gofmt over all *.go files
-	@echo "Running source files through gofmt..."
-	$(GOFMT_CMD)
+	@echo "==> Running source files through gofmt..."
+	@$(GOFMT_CMD)
 
 .PHONY: build
 build: install-deps ## build Go binary for all GOARCH
-	@echo "Building dynolocker for all GOARCH/GOOS"
-	$(foreach GOARCH,$(GOARCHS),$(foreach GOOS,$(GOOSES),$(call cross_build,$(GOOS),$(GOARCH))))
+	@echo "==> Building dynolocker for all GOARCH/GOOS..."
+	@$(foreach GOARCH,$(GOARCHS),$(foreach GOOS,$(GOOSES),$(call cross_build,$(GOOS),$(GOARCH))))
 
 .PHONY: test
 test: install-deps ## Run tests
-	@echo "Running tests..."
-	$(foreach TEST_DIR,$(TEST_DIRS),$(call test,$(TEST_DIR)))
+	@echo "==> Running tests..."
+	@$(foreach TEST_DIR,$(TEST_DIRS),$(call test,$(TEST_DIR)))
+
+check_github_token:
+	$(if ${GITHUB_OAUTH},,$(error GITHUB_OAUTH not set, please set ENV var))
+
+.PHONY: release
+release: test fmt build check_github_token ## Release to Github
+	@echo "==> Releasing binary artifacts..."
+	@sh -c  "./scripts/release.sh"
+
+export

scripts/release.sh

@@ -0,0 +1,63 @@
+#!/usr/bin/env bash
+#
+# Pushes a release to Github via the Github releases API
+
+set -e
+
+if [[ -z "$PKG" ]] \
+  || [[ -z "$VERSION" ]] \
+  || [[ -z "$GITHUB_OAUTH" ]]
+then
+  echo "Please don't run this script directly, instead run 'make release'"
+  exit 1
+fi
+
+AUTH="Authorization: token ${GITHUB_OAUTH}"
+GH_API="https://api.github.com"
+GH_ASSET_UPLOAD="https://uploads.github.com"
+GH_REPO="${GH_API}/repos/alphagov/${PKG}"
+RELEASE_FILE=$(mktemp)
+
+# Validate token.
+curl -o /dev/null -sH "$AUTH" $GH_REPO || { echo "Error: Invalid repo, token or network issue!";  exit 1; }
+
+# Get the parent directory of where this script is.
+SOURCE="${BASH_SOURCE[0]}"
+while [ -h "$SOURCE" ] ; do SOURCE="$(readlink "$SOURCE")"; done
+DIR="$( cd -P "$( dirname "$SOURCE" )/.." && pwd )"
+
+# Change into that directory
+cd $DIR/bin
+
+git tag v${VERSION}
+git push origin --tags
+
+cat << EOF > "${RELEASE_FILE}"
+{
+  "tag_name": "v${VERSION}",
+  "target_commitish": "$(git rev-parse HEAD)",
+  "name": "v${VERSION}",
+  "body": "Release of ${PKG} v${VERSION}",
+  "draft": false,
+  "prerelease": false
+}
+EOF
+
+release_id=$(curl -X POST \
+  --data @"${RELEASE_FILE}" \
+  -H "Authorization: token ${GITHUB_OAUTH}" \
+  -H "Content-Type: application/json" \
+  "${GH_REPO}/releases" | jq -r .id)
+
+rm -rf ${RELEASE_FILE}
+
+for bin in $(ls *"${PKG}"* | grep -v zip); do
+  echo "==> Zipping artifact... ${bin}" >&2
+  zip -r ${bin}.zip ${bin}
+  echo "==> Uploading artifact... ${bin}.zip" >&2
+  curl -X POST \
+    --data-binary @"${bin}.zip" \
+    -H "${AUTH}" \
+    -H "Content-Type: application/zip" \
+    "${GH_ASSET_UPLOAD}/repos/alphagov/${PKG}/releases/${release_id}/assets?name=${bin}.zip"
+done